Denture connection



April 7, 1931 F.1J. KENT 1,799,469

DENTURE CONNECTION Original Filed Aug. 4, 1925 Patented Apr. 7, 1931 UNITED STATES PA NT OFFICE.

FRANK J. KENT, OF MonrcLManEW JERSEY, 'Assrenon To. CHAYES DENTAL rNsrRu-f MENT CORPORATION, OF NEW YORK, n. Y.,':A CORPORATION OF DELAWARE v r V DENTURE oonnno'rron I Application filed August4, 1925, Serial No. 48,026. Renewed June 9,1930." j

her in various ways with a. view to forming a r spring tongue or tongues. The metal'of the head, however, is not Well suited to this 'additional spring function, the tongues quickly, losing their resiliency, breaking off and failing in other respects. i Special objects of this invention are to provide simple and practical means for resiliently holding the denture in which the above mentioned faults will be eliminated; in which any desired'spring holding tension may be provided; in which the holding tension will be of a lasting or more permanent character and of such a nature that it may be readily renewed in case of breakage or the like.

The foregoing and other desirable objects are attained in this invention by certain novel features of construction, combinations and relations of parts as set forth in the following specification. 1 I

In the drawing accompanying and forming part of this specification, the invention is illustrated in a variety of different forms, it should be understood that the structure is capable of further modification without departure from the broad spirit and scope of the invention as hereinafter defined and claimed. 7

Figure 1 is a perspective view of the head member of the denture as-constructed with a resilient element seated in an undercut slot in the face of the same.

Figure 2 is a similar view of the socket designed to receive the head.

Figure 3 is a similar view of the head as equipped with a reverselybent spring wire retainer.

Throughout the several views the head member is designated 12 and is shown as of generally T-shaped form and the socket member is designated 13, the latter being in the form of a shell having a cavity to receive but I the cross head of the T -shaped member and-, aslot 14for the neck portion of such member. Theseparts are usually mounted withv the head piecewappliedto a removable denture,

and the socket piece mounted in pier teeth,

as well understood in the art.

In the formof the invention'illustrated in Figure 1, the retainer consistsof a helically' coiled springf24 held in an undercut part circular i groove 25 extending diagonally across the face of the head, the coils of this springproje'cting sufliciently-to form a series of resilient fingers for engagement with the back wallgof the socketmember. A diagonal or oblique disposition of the retainer is of advantage in allowing fora greater length of retainer and in giving the retainer a hold in its seatso that it cannot pull out when the head is withdrawn. from the socketf directions to provide the bends 27 bearingv against the back of the groove,the bends 28 In Figure 3 the retainer is illustrated in? projecting through the frontof the groove and the laterally projecting oppositely prm jecting bends 29, '30, engaged beneath the" overhanging edge portions of the a groove. The projecting bends 28 make yielding con tact with the socket wall and the other bends support and removably secure the retainer wire init's seat.

In thesev'eral'forms of the invention, the

retainers be located diagonally of the head, as indicated in Figure 1, to increase the frictional holding efiect and prevent accidental displacement or the retainer from its seat in the head member. The retainers take up most of'the wear on, the parts'and as they are soreadily renewable, any wear or breakage can. be. taken; care of veryquickly by simply substituting a. new retainer? Such substitution can be made without the exercise of any speclal skill or the use of any special tools and may in fact be made by the user of the denture, when the occasion reuires. What is claimed 1s:

1. In removable dentures, the combination of co-acting post and socket members, the post member having a relatively wide head with an open channel extending angularly thereacross and a resilient retainer held in said channel 5 and projecting therefrom for engagement with a wall of the cooperating socket.

2. In removable dentures, the combination of co-acting post and socket members, the post member having a relatively wide head with an open channel extending angularly thereacross and a resilient retainer held in said channel and projecting therefrom for engagement with a wall of the cooperating socket, the channel being inclined with respect I jto the axis of the postto position the retainer obliquely of the head.

l 3. In removable dentures, the combination I of co-acting post and socket members, the post member having a relatively Wide head with an open channel extending angularly thereacross and a resilient retainer held in said channel and projecting therefrom for engagement with a wall of the cooperating socket, the channel being inclined with respect to the axis of the post to position the retainer obliquely of the head and being undercut to provide edges for holding engagement over the edges of the retainer.

4. In removable dentures, a post. member having an open undercut channel acrossthe' face of the same and open at both ends and a resilient retainer entered endwise through said channel and exposed throughout its length through the open front of such channel,the channel extending across the head at an incline to the axis of the post to thereby position the retainer obliquely of the post.

5. In removable dentures, a post member having an open groove extendingacross the 4 face of the same and provided with overstandingedge portions and a resilient spring Wire seated in said groove, held by the overstanding edge portions and having resilient loops exposed continuously through the open front of the groove.

6. In removable dentures, a post member having a part circular groove extending across the face of the same and a coiled helical spring held in said groove with the convolutions of the same exposed through the open front of the groove.

7 In removable dentures, a post member having a part circular groove extending across the face of the same and a coiled heli- ,5 cal spring held in said groove with the convolutions of the same exposed through the open front of the groove, said groove being inclined to the axis of the post."

In testimony whereof, I aflix my signature. FRANK J. KENT. 

